Radiator core



` RADIATOR CORE Filed June lo, 1925 2 sheets-sheet` 1 I Illl lllll n .zl |l||| llll Il ||||1||| Ill" Z o ...Nw i- 11: Z QJ Z, Z d, n T -I Feb-22 .1927' J. M. FDDERS RADIATOR com:

Filed June 1o, 1925 2 sheets-Sheet 2 4 v fz@ l flllallll linnn' of Fig.1.

Patented Feb. 22, 1927.

f' UNITED vsTA'lvEs l i l 1,618,279 PATENT OFFICE.Y

JOHN M. FEDDERs, OF BUFFALO, NEW YORK, AssreNoR 'ro FEDDEES MANUFACTUR-ING COMPANY, INC., OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

RADIATOR CORE.

This invention relates `to acore for radiators designed moreparticularly for use in connection with the cooling system of anautomobile gas engine and has for its main object the provision of acore for this class of radiators which is strong and durable, whichhasla Ylarger radiating capacity and which can be manufactured atcomparatively low cost. Y

s This invention is an improvement on the radiator core shown anddescribed in my application for Letters Patent No. 8556 filed February11, 1925.

In the accompanying drawings Fig. 1, is a front eleva-tion, partly insection of a radiator embodying my improvements.

Fig. 2, is a horizontal sectionV ofthe saine taken on line 2 2, Fig. 1.Y i

Fig. 3, is a fragmentary horizontal section, on an enlarged scale, takenon the line 3 3 of Fig. 1.

Fig. 4, is a fragmentary horizontal section, on an enlarged scale, takenon the line 4 4 Fig. .5, is a fragmentary perspective view Ofone of theradiating plates.

Fig.- 6, is a fragmentary vertical section taken on line 6 6, of Fig..1.'

Similar characters of reference indicate like parts throughout theseveral views.'

The numerals 20 and 21 representthe upper and lower kwater boxes orheaders which maybe connected with the supply and return pipes of thegas engine cooling system in any suitable and welhknown manner.

Between the headersis arranged the cooling core of thel radiator whichconsists essentially of a vplurality of upright water i tubes 22communicating at their upper ends with the bottom of the upper headerandat their lower ends with the top ofthe lower header, and a plurality ofhorizontal air passages 23, 24 arranged between adjacent water tubes andextending from the front side to the rear side of the radiator.

Each of the water tubes is constructed of a single sheet of metal whichis bent to form two upright flat parallel longitudinal walls 25, a rearturn 26 connecting the rearedges Of-said walls, -two inwardly oE-setflanges 19 arranged at the front edges of said walls andk connectedtogether by soldering or Otherwise to form a water tight jointtherebetween., and ,horizontal end flanges 27.511.'-

Application filed .Tune 10, 1925. SerialpNO. 36,131.

ranged at the upper and lower ends of the walls and offset flanges andprojecting laterally from Opposite sides of the tube.

Y A plurality of tubes of this character are arranged in a transverserow between-the upper and lower headers and spaced suitable distancesapart. The upper and Vlower flanges of each tube have their longitudinal.edges connected with the correspondingV edges of the upper and lowerflangesy of adjacent water tubes so as to form in eifect a plate at theupper end of the tubes which is secured by soldering or otherwise to theupper header andgcloses the bottom `thereof and a plate at the lowerends of the tubes which is secured by soldering or otherwise -rangedside by side and are connected at one pair of their correspondinglongitudinal edges while the yopposite pair of their correspondinglongitudinal edges are disconnected but oppose each other. l/Vhen themetal sheet is thus folded each of its corrugated strips forms an innerset of corrugations and an Outer .set of corrugations Yand the suinmits35 of the inner set of corrugations oppose each other so as to form avertical row of said airY passages 23 while the outer summits 36 ofthe'outerset of corrugations are opposed to the corresponding summits ofthe outer corrugations of spacing L,strips associated with adjacentwater tubes V.and lform therewith verticalL vrows of said air passages 24.

The central or intermediate parts ofthe i summits 35 ofthe inner setofcorrugations Y are odsetvv laterally, as shown at- `Y37, so that Vsuchoffsets oncompanion summits 35 together form a tubular seat while, theend 'portions 38 of these summits next to the connecting turn betweenthe two spacing strips and the end portions 39 of these summits yat thedisconnected edges of these strips oppose each other in rear and infrontof the respectivewater tubes. f V Oneof these water tubes is seatedat'intervals throughout its length in the tubular lio seats between theopposing sunnnits ol the inner eoijrugations ioit' the .tufo stripsarranged oniopposite sides ot- `this `tube and the latter also traversesthe air passages 23 formed between these strips so that the air inpassing through said passages will come p in direct contaetwith theportions ot' the tube exposed in said passages and carry away the heat'which is transmitted to the saule lroni the water passing through thetubes.

The `disoonneeted trout edges oil the tiro `spacing strips associatedwith each water tube are ipreterably connected by soldering with itheouter sides oil the longitudinal -l'langesiltl ot Athis tube.

In order to increase the transmission oilE heat to the air, radiatingwings, tongues or `bullies `18, "ttl, ttl, l2 `are struelt out of theybody of the sheet metal forming these strips soithatthe same projectlaterally `troni these strips into the path ot the a` as the sainepasses through the air passages and inten ceptsthe air. For the `purposeol holding `the several `water tubes and spacing strips in positionrelative te each other at the rear oit the `core and increasing thestrength oit the saine so that it is capable ol" sustaining the shockand strain to which it is subjected while in `use, nieans are providedf'lor eonnecting the opposing spaoingstrips of adjacent Water tubes.This is preferably ae- `eoi'iiplished by providing the rear parts ot thesunnnits "oit the outer eorrugations with lips, Wings `or tongues lla,l5, Which preterably incline in opposite directions, the lips dft inthis instance inelining hacltwardly and thelips l5 forwardly, and thelip Llsl on the spacing strip associated with one water tube`interloeking by a Wedging engagement with ithe lip l5 on the spacingstrip ot an adjacent water tube, as shown in Figs. 2 and et. `ly thisineans `the rea r parts ot the spacing strips on adjacent tubes arelirnilj,7 drawn against each other and secured together mechanicallyWithoutI the use ot' solder. These interlocking lips or wings furtheradd to the ballliug oll'eet on the airto induce the latter to absorb thegreatest auiount olf heat contained in the water.

In order to still turther increase the `transterenceoit heat- Atrom thewater .in the water tubes to the air passing through the air paf sagesauxiliary means are provided which are constructed as follows Thenumeral represents a pluralit)7 oit' `upright radiatinfr strips or`plates oit sheet metalpeaeh of `which `is arrangedlengthnWisebetweenthe opposing spacing strips ot' two adjacent watertubes. Each of: these radiating strips is engaged on its opposite etsliythe outer snnnnits 3G of the outer `corrugations of twoopposingspacing strips and is firmly gripped therebetweenso as to produce apgoodmetallic .Contact therewith and thereby enable the radiating striptoltake soule ol the heat :troni the respective spacing strips andtransfer `it to `the air which coines into contact With opposite sidesof the respcetiveiradiating strip. i

,lnorder to `permit the locking Wings, lips or tongues et-l, Ll5 on therearlparts ol the sunnnits o't adjacent spacing strips to engage` witheach other, the adjacent reareft oteaeh radiating strip provided with arertieal row ol clearance openings 5l, through which theinelinedflipstl, 45, project andengage with eaoh other so as to draw therespective spacing `strips by a wedge action against `opposite sides olthe radiating strip, as shown in Figs. l and Ailf. rlflle lips,therefore, not `only interlock `the spacing strips `but also interlockwith the radiating strip therebetween and hold the latter againstdisplacement.

`By thus arranging a radiating strip between the outer summitsotadjacent eorrugated spaeing stripseaeh air passagoll divided into `twosections land splits fthe s reani nl air `passingtherethrough into jtwojets which inipinge aganstopposite sides of the `respective radiatingstrip and thus ncrease the radiation ot heat to the air aceordingly.

For the purpose ol increasing the `heat radiating `capacity ot' theradiating strips each of these strips is provided with a plurality oitWings or lugs 52 whioh are struck out ot the body ot thisstrip withinthe air missages A and project laterally therefrom so as to interceiitthe streams ol air passing through the core. ""llliese wings or lugs 52are preferably arranged in longitudinal rows and, the nien'ibers ol eachrow project alternate-ly troni opposite sides oit `the re spectiveradiating strip, `asshown in Figs. l Aand 5. These wings or lugs ineachrow also in'elerably iu'ojeet alterin'rtely upward ly and downwardlyaudthus tend to unitorndy obstruct the air iluulisiug through the,manages Qil. and thereby obtain `the =iua,\: unun radiating eliieieney.

l elainl as niy invention:f-w y l. il radiator comprising `a pluralityol avaler tubes and a plurality` ol" air passages arranged betweenadjacent Water tubes, oae'h ot said water tubes `'having opposite sheetnietal ufallmtwo spaeing strips of corrugated `sheet nietal arranged on`opposite sides olE each water tube and each spaeingstrip haaiingalternating inner and outer sunnnits, the inner sunnnits ot `said stripsengaging opposite sides ol" a Water tube, and `a plurality ot radiatingstrips ol sheet inetal each arranged between the outer summits ot twoopposing spacing strips ol.z adjacent Water tubes, each radiating stripbeing provided with a plurality ot looking openings, and

'the adjacent" parts ot the outer summits of the respectivespaeingstrips ybeing prorided with interengaging inclined locking lipswhich project through said openings of the radiating strip.

2; A radiator comprising a plurality of water tubes and a plurality ofair passages arranged between adjacent water tubes, each of said watertubes having opposite sheet metal walls, two spacing strips ofcorrugated sheet metal arranged on opposite sides of each water tube andeach spacing stripY having alternating inner and outer summits, theinner summits of said strips engaging opposite sides of a water tube,and a plurality of radiating strips of sheet metal each arranged betweenthe outer summits of two opposing spacing strips of adjacent watertubes, each radiating strip being provided with a plurality of lockingopenings, and the adjacent parts of the o-utersummits oi' the respectivespacing strips being provided with interengaging inclined locking vlipswhich project through said openings of the radiating strip and saidradiating strips being provided between adjacent outer' sinn` mits ofthe corrugated spacing strips with radiating wings which are struck outof the metal o-said radiating strips.

3. A radiator comprising a plurality of water tubes and a-plurality ofair passages arranged between adjacent water tubes, each of said watertubes having opposite sheet metal walls, two spacing strips ofcorrugated sheet metal arranged on opposite sides of each water tube andeach spacing strip having alternating inner and outer' summits, theinner summits of said strips engaging opposite sideso'f a water tube,and a plurality oi radiating strips of sheet metal each arranged betweenthe outer summits of two opposing spacing strips of adjacent watertubes, each'radiating strip being 'provided' with a plurality of lockingopenings, and the adjacent parts of the outer summits ot' the respectivespacing strips being provided with interengaging inclined locking lipswhich project through said openings of the radiating strip and saidradiating strips being provided between adjacent outer summits of thecorrugated spacing strips with of each water radiating wings which arestruck out of the metal of said radiating strips and which projectalternately in opposite directions.

4L. A radiator comprising a plurality of Water tubes and a plurality ofair passages arranged between adjacent water tubes, each oitl said watertubes having opposite sheet metal walls, two spacing strips ofcorrugated sheet Vmetal arranged on opposite sides of each water tubeand each spacing strip having alternating inner and outer summits, theinner summits of said strips engaging opposite sides of a water tube,and a plurality of radiating strips of sheet metalpeach arranged betweenthe outer summits of two opposing spacing strips of adjacent watertubes, each radiating strip being provided :with a plurality of lockingopenings, and

the adjacent parts of the outer summits of the respective spacing stripsbeing provided with interengaging locking lips which project throughsaid openings of the radiat-y ing strip. l

5. A radiator comprising a plurality of water tubes and a plurality ofair passages arranged between adjacentwater tubes, leach of said watertubes having opposite sheet metal-'walls, two spacing strips ofcorrugated sheet metalr arranged on opposite sides 'tube and eachspacing strip having alternating inner and outer'summits, the innersummits of said strips engaging opposite sides of a water tube, and aplurality of radiating strips of sheet metal each arranged between theoutersummits of two opposing spacing strips of adjacent water tubes,each' radiating strip being provided with av plurality of lockingopenings,

and the adjacent parts ofthe outer summits Y of the respective spacingstrips being provided with interengaging locking lips which projectthrough said openings of the radiating strip and said radiating stripsbeing provided between adjacent outer summits of the corrugated spacingstrips with radiat ing wings which are struck out of the metal of saidradiating strips.

JOHN M. FEDDERs.

